Hello Team,
I am using your THS8135 and TVP7002 on my analog video input and output interface. Each of these devices use a 3.3V supply for analog power and a 1.8V supply for digital power.
My question is regarding power sequencing requirements for these two supplies. Due to board and system requirements I would like to apply the 3.3V analog power first, then after 25ms apply the 1.8V digital power. Ground to the both devices is unified, so that analog GND and digital GND are applied at the same time and prior to 3.3V supply. Digital signals feeding into the device will be in a tri-state condition during this time.
Will this power-up sequence work?
Do I need to take any precautions?
I could pull the PWDn and RESETn signals on the TVP7002 low through a weak pull-down if this helps, but the THS8135 does not have similar signals.
Your urgent help is appreciated.
Regards,
John